know-it-alls

plural of know-it-all
as in wiseacres
informal + disapproving a person who talks and behaves like someone who knows everything My neighbor is a real know-it-all, always telling me what to do.

Synonyms & Similar Words

Relevance

Thesaurus Entries Near know-it-alls

Cite this Entry

“Know-it-alls.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/know-it-alls. Accessed 21 Apr. 2024.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!